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Division with rectangular multiplier supporting multiple precisions and operand types

  • US 7,962,543 B2
  • Filed: 06/01/2007
  • Issued: 06/14/2011
  • Est. Priority Date: 06/01/2007
  • Status: Expired due to Fees
First Claim
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1. A method implemented by a floating point unit of a processor, comprising:

  • determining a first precision indicator;

    estimating a reciprocal [X0] of a divisor to determine a reciprocal estimate;

    determining a first product [D0] based on a rectangular multiplication of the divisor and the reciprocal estimate;

    determining a first complement value [R0] based on a complement of the first product;

    determining a second product [N0] based on a rectangular multiplication of the reciprocal estimate and a dividend; and

    determining a quotient of the divisor and the dividend at a rectangular multiplier based on the second product, the precision indicator, and a portion of the first complement value.

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